Cold Ion Measurements Enabled by Electrostatic Instrument Biasing: Implementation and Modeling Results

Cold Ion Measurements Enabled by Electrostatic Instrument Biasing: Implementation and Modeling Results

This archive contains the data file for the five CPIC simulations run for paper Larsen et al 2019.  [1, 2]. The data files contents and format are described.

Each data file is stored in HDF5 format written with h5py [3, 4].

The files named field_potential_bias_XX_data.h5 contain the electric field components and electric potential with the following structure:

+

:|____Author (str [50])

:|____Bias (str [3])

:|____DOI (str [22])

:|____Date (str [14])

:|____Description (str [81])

:|____File_Creator (str [44])

:|____License (str [2140])

|____E (h5py._hl.dataset.Dataset (3, 101, 101, 101))

    :|____Description (str [41])

    :|____Format (str [94])

    :|____Units (str [3])

|____XYZ (h5py._hl.dataset.Dataset (3, 101))

|____phi (h5py._hl.dataset.Dataset (101, 101, 101))

 

See the metadata within the file for units of each variable.

The files named detector_bias_XX_data.h5 contain the particles collected at the simulated detector in a mix of physical and CPIC units with the following structure:

+

:|____Author (str [50])

:|____Bias (str [4])

:|____DIO (str [22])

:|____Date (str [14])

:|____Description (str [81])

:|____Detector_area (str [11])

:|____File_Creator (str [44])

:|____License (str [2140])

:|____Timestep (str [12])

:|____Timestep_description (str [114])

:|____electron_temperature (str [6])

:|____photoemission_electron_energy (str [4])

:|____potential_at_boundary (str [3])

:|____proton_electron_mass_ratio (str [4])

:|____proton_temperature (str [7])

:|____reference_density (str [9])

|____Energy (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [32])

    :|____Units (str [2])

|____Velocity (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [59])

    :|____Units (str [3])

|____Velocity_CPIC (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [59])

    :|____Units (str [4])

|____Vx (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [3])

|____Vx_CPIC (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [4])

|____Vy (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [3])

|____Vy_CPIC (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [4])

|____Vz (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [3])

|____Vz_CPIC (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [44])

    :|____Units (str [4])

|____phi (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [41])

    :|____Units (str [3])

|____q (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [47])

    :|____Units (str [4])

|____species (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [26])

|____theta (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [37])

    :|____Units (str [3])

|____timestep (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [41])

|____weight (h5py._hl.dataset.Dataset (2296,))

    :|____Description (str [38])

    :|____Units (str [4])

The information in parentheses are the datatype and size, square brackets, [], denote a single element of that many characters and parentheses, (), denote the stored array size. Lines with a leading colon, :, are metadata fields to make the data files more usable.

1.         Delzanno, G.L., et al., CPIC: a curvilinear particle-in-cell code for plasma–material interaction studies. IEEE Transactions on Plasma Science, 2013. 41(12): p. 3577-3587.

2.         Meierbachtol, C.S., et al., An electrostatic Particle-In-Cell code on multi-block structured meshes. Journal of Computational Physics, 2017. 350: p. 796-823.

3.         Folk, M., A. Cheng, and K. Yates. HDF5: A file format and I/O library for high performance computing applications. in Proceedings of supercomputing. 1999.

4.         Collette, A., et al., h5py/h5py 2.9.0. 2018.